/**
* Transforms an image in video clip
* @global string $ffmpegpath
* @global type $encoders_path
* @param type $movieout
* @param type $imagein
* @param string $encoder
* @param type $duration
* @return boolean
*/
function movie_title_from_image($movieout, $imagein, $encoder, $duration = 8)
{
global $ffmpegpath, $encoders_path, $aac_experimental;
$movieout = escape_path($movieout);
$encoder_values = explode('_', $encoder);
$codec = $encoder_values[0];
$quality = $encoder_values[1];
$resolution_values = explode('x', $encoder_values[2]);
$width = $resolution_values[0];
$height = $resolution_values[1];
$encoder = $encoders_path . '/' . $codec . '_' . $quality . '.ffpreset';
// checks if the encoder file exists
if (!is_file($encoder)) {
return "encoder not found {$encoder}";
}
$video_filter = "scale=iw*min({$width}/iw\\,{$height}/ih):ih*min({$width}/iw\\,{$height}/ih), pad={$width}:{$height}:({$width}-iw*min({$width}/iw\\,{$height}/ih))/2:({$height}-ih*min({$width}/iw\\,{$height}/ih))/2";
if ($aac_experimental) {
$aac_codec = ' -acodec aac -strict experimental ';
// overwrites audio codec from encoders file
}
/*
* generates input silent audio stream for titling:
* -ar : audio sample rate
* -ac : audio channels
* -f : force audio input format (s161e required to generate the audio stream)
* -t : duration in seconds
* -i : input source
* generates input video stream for titling :
* -loop : better image rendering
* -r : frame rate
* -i : input file (image) for title
* -t : duration in secondes
* -fpre : video preset file (settings used to encode the video)
*/
$cmd = $ffmpegpath . ' -ar 44100 -ac 2 -f s16le -t ' . $duration . ' -i /dev/zero ' . '-loop 1 -r 25 -i ' . $imagein . ' -t ' . $duration . ' -vf "' . $video_filter . '" -fpre ' . $encoder . ' ' . $aac_codec . ' -y ' . $movieout;
exec($cmd, $cmdoutput, $returncode);
print "\n{$cmd}\n";
//check returncode
if ($returncode) {
return join("\n", $cmdoutput);
}
return false;
}
function gd_image_create($title_array, $width, $height, $file)
{
global $fontfile;
global $quality;
global $fontratio;
global $linelength;
// creates the image
$img = imagecreate($width, $height);
// defines the background color
$bg_color = imagecolorallocate($img, 8, 89, 155);
// setup the text color
$txt_color['white'] = imagecolorallocate($img, 255, 255, 255);
$txt_color['blue'] = imagecolorallocate($img, 105, 139, 205);
if (isset($title_array['album'])) {
// font size relative to the global height of the image
$fontsize = $height / (32 * $fontratio);
// gd_push_text($img, $fontsize, $txt_color['blue'], wordwrap($title_array['album'], 45,"\n"), ($height * 0.25));
$dimensions = imagettfbbox($fontsize, 0, $fontfile, $title_array['album']);
$txt_height = $dimensions[1] - $dimensions[7];
// splits the string in multiple strings if its size is too long
$album = split_title($title_array['album'], $linelength * 1.27);
switch (count($album)) {
case 1:
$pct_height = 0.25;
break;
case 2:
$pct_height = 0.2;
break;
case 3:
$pct_height = 0.15;
break;
default:
$pct_height = 0.25;
break;
}
// adds each value of the array in the generated image
foreach ($album as $index => $string) {
gd_push_text($img, $fontsize, $txt_color['blue'], $string, $height * $pct_height + $index * ($txt_height + 5));
}
}
if (isset($title_array['title'])) {
$fontsize = $height / (25 * $fontratio);
$dimensions = imagettfbbox($fontsize, 0, $fontfile, $title_array['title']);
$txt_height = $dimensions[1] - $dimensions[7];
// splits the string in multiple strings if its size is too long
$title = split_title($title_array['title'], $linelength);
// adds each value of the array in the generated image
foreach ($title as $index => $string) {
gd_push_text($img, $fontsize, $txt_color['white'], $string, $height * 0.4 + $index * ($txt_height + 5));
}
}
if (isset($title_array['author'])) {
$fontsize = $height / (32 * $fontratio);
gd_push_text($img, $fontsize, $txt_color['white'], $title_array['author'], $height * 0.7);
}
if (isset($title_array['date']) && $title_array['hide_date'] != true) {
$fontsize = $height / (42 * $fontratio);
gd_push_text($img, $fontsize, $txt_color['white'], $title_array['date'], $height * 0.75);
}
if (isset($title_array['copyright']) || isset($title_array['organization'])) {
$string = $title_array['copyright'] . (isset($title_array['copyright']) && isset($title_array['organization']) ? " - " : "") . $title_array['organization'];
$fontsize = $height / (55 * $fontratio);
gd_push_text($img, $fontsize, $txt_color['blue'], escape_path($string), $height * 0.95);
}
// generates the image
return imagejpeg($img, $file, $quality);
}
